From 709c42f0cabc96d0e0edf72753a0967593206ff4 Mon Sep 17 00:00:00 2001
From: Fabiano Fidêncio <fidencio@redhat.com>
Date: Apr 25 2018 05:30:08 +0000
Subject: DP: Add dp_sbus_invalidate_group_memcache()


This function will be called from the data provider to the NSS
responder, which will invalidate a group in the memcache.

Related:
https://pagure.io/SSSD/sssd/issue/2653

Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

---

diff --git a/src/providers/data_provider/dp.h b/src/providers/data_provider/dp.h
index ceb49da..e8b2f9c 100644
--- a/src/providers/data_provider/dp.h
+++ b/src/providers/data_provider/dp.h
@@ -179,6 +179,8 @@ void dp_sbus_reset_groups_ncache(struct data_provider *provider,
 void dp_sbus_reset_users_memcache(struct data_provider *provider);
 void dp_sbus_reset_groups_memcache(struct data_provider *provider);
 void dp_sbus_reset_initgr_memcache(struct data_provider *provider);
+void dp_sbus_invalidate_group_memcache(struct data_provider *provider,
+                                       gid_t gid);
 
 /*
  * A dummy handler for DPM_ACCT_DOMAIN_HANDLER.
diff --git a/src/providers/data_provider/dp_resp_client.c b/src/providers/data_provider/dp_resp_client.c
index 5735188..a61f7c5 100644
--- a/src/providers/data_provider/dp_resp_client.c
+++ b/src/providers/data_provider/dp_resp_client.c
@@ -189,3 +189,48 @@ void dp_sbus_reset_initgr_memcache(struct data_provider *provider)
     return dp_sbus_reset_memcache(provider,
                           IFACE_NSS_MEMORYCACHE_INVALIDATEALLINITGROUPS);
 }
+
+void dp_sbus_invalidate_group_memcache(struct data_provider *provider,
+                                       gid_t gid)
+{
+    struct dp_client *dp_cli;
+    DBusMessage *msg;
+    dbus_bool_t dbret;
+
+    if (provider == NULL) {
+        DEBUG(SSSDBG_CRIT_FAILURE, "No provider pointer\n");
+        return;
+    }
+
+    dp_cli = provider->clients[DPC_NSS];
+    if (dp_cli == NULL) {
+        return;
+    }
+
+    msg = dbus_message_new_method_call(NULL,
+                                       NSS_MEMORYCACHE_PATH,
+                                       IFACE_NSS_MEMORYCACHE,
+                                       IFACE_NSS_MEMORYCACHE_INVALIDATEGROUPBYID);
+    if (msg == NULL) {
+        DEBUG(SSSDBG_CRIT_FAILURE, "Out of memory?!\n");
+        return;
+    }
+
+    dbret = dbus_message_append_args(msg,
+                                     DBUS_TYPE_UINT32, &gid,
+                                     DBUS_TYPE_INVALID);
+    if (!dbret) {
+        DEBUG(SSSDBG_CRIT_FAILURE, "Out of memory?!\n");
+        dbus_message_unref(msg);
+        return;
+    }
+
+    DEBUG(SSSDBG_TRACE_FUNC,
+          "Ordering NSS responder to invalidate the group %"PRIu32" \n",
+          gid);
+
+    sbus_conn_send_reply(dp_client_conn(dp_cli), msg);
+    dbus_message_unref(msg);
+
+    return;
+}